1

Ubuntu has been freezing randomly for some time now. Usually after a freeze, the crash screen would be up and it would show the exec path as update-notifer.

Today after 9 hours of uptime it froze with no crash report. I disabled auto updates before this last freeze.

We use it on a server that hosts CrushFTP. At the very lease could someone help point me to the correct log that could potentially show the cause of this?

I'm still very new to Ubuntu so apologies for my ignorance here.

If anyone has the time to help me comb through a log to help me understand what I'm looking at that would be great too :)

N0rbert
  • 103,263
Matt
  • 11

1 Answers1

0

How to monitor your cron log in real time:

16.04: How do I make cron create cron.log and monitor it in real time?

Excerpt:

--> Make a change in /etc/rsyslog.d/50-default.conf with your favorite editor:

sudo gedit /etc/rsyslog.d/50-default.conf

Use Ctrl-f (find) and type cron to find the line that says 

#cron.*         /var/log/cron.log

Remove the # from that line. Then restart the service:

service rsyslog restart

From then on, all cron-related output will go to /var/log/cron.log

In order to prevent cron from sending summary emails, place this line at the beginning of your crontab file:

crontab -e
(Insert first line)
MAILTO=""

Then to watch it in near-real-time, first create a wcron command:

echo "#!/bin/bash" >wcron
echo "watch -n 10 tail -n 25 /var/log/cron.log" >>wcron
chmod +x wcron
sudo cp wcron /usr/sbin
  • watch -n 10 tells it to refresh the page every 10 seconds
  • tail -n 25 tells it to display the last 25 entries

Whenever you want to monitor cron in near-real-time in a terminal window, enter:

wcron

------------------------------------------------------------

Same can be done to monitor syslog, by creating the slog command

echo "#!/bin/bash" >slog
echo "watch -n 2 tail -n 25 /var/log/syslog" >>slog
chmod +x slog
sudo cp slog /usr/sbin

Whenever you want to monitor /var/log/syslog in near-real-time in a terminal window, enter:

slog

Note: If you need to pause this output temporarily:

  • Ctrl-S for Pause

  • Ctrl-Q for Resume

SDsolar
  • 3,219